Handsaw.



0. C. FRAME.

HANDSAW.

MPLIGATION FILED 0012.18, 1912.

Patented Oct. 28, 1913.

INVENTOR OLIVER C. FRAME, OF PASADENA, CALIFORNIA.

HANDSAW.

Specification ofLetters Patent.

Patented Oct. 28, 1913.

.Application filed October 18, 1912. Serial No. 726,553.

To all whom may concern Be it known that I, OLIVER C. FRAME, Va citizen of the United States, residing at Pasadena, in the county of Los Angeles and State of California, have invented certain new and Vuseful Improvements in Hand saws; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in hand saws, having for its object the production of a hand saw in which the saw blade may be quickly adjusted and firmly secured at any desired position with relation to the handle.

With this object in view the invention consists in certain features of construction and combinations of parts as will be hereinafter described and pointed outin the claims.

In the accompanying drawings Figure l is a view in side elevation of my improvement; Fig. 2 is a similar view illustrating the saw blade as detached from thehandle; Fig. 3 is a transverse section of the thumb-nut for clamping the blade to the handle, and Fig. 4 is a view in side elevation of a modification.

A represents the saw blade and B the handle, which is preferably constructed as illustrated in the drawings. Within a saw kerf C formed in the forward portion of the handle is inserted the rear portion D of a reinforcing metal plateV E, which is secured in place by the screws C1, or it may be secured by rivets extending through the handle. The forward portion F of the reinforcing plate projects in front of the handle and has firmly riveted to its opposite sides the sheet metal side plates G, which project forwardly from the plate E whereby there is formed between the plates G a narrow slotted seat I-I for the insertion and firm support of the heel I of the saw blade. rI`he heel I may be formed on the segment of a circle having a slightly greater radius than that of the segment formed by the curved seat H, so that the heel of the blade will bear at or near its ends on the seat in the handle and thus insure the solidity of the bearing for the blade. The rear edge is provided with a series of angular notches K which may be of any desired number, size and shape, and also with a corresponding series of angular holes L, each Of which is located in front of and in close proximity to one of the notches K, in the heel of the saw blade.

In metal side plates .I are formed two angular' holes M and N for the reception of the angular screw threaded shank O and supplemental head P of the two armed locking bolt Q, which is secured in place by means of the thumb nut R, which screws on to the screw threaded end of the shank O. Thumb nut R is provided with a disk S which is concaved on its under side l)1 to permit the head P to project therein and beyond the surface of the side plate J, and at the same time to provide an extended bearing of the thumb nut on the side plate J.

\ l/Vhen the hand saw is in ordinary use the saw blade is secured in line with the handle' as illustrated in Fig. l, and when thus adjusted and secured, the heel of the blade is iirmly retained in place by the two-armed fastening bolt and nut. Instead of employing a wide saw blade, a narrow saw blade j lnay be substituted therefor as illustrated in Fig. 4f. The heel of the narrow blade is provided with a single notch and a single hole located in close proximity thereto. Instead of using a blade provided with teeth on one edge only, the blade may be provided with teeth on its opposite edges. The heel of the blade whether broad or narrow, may be provided with a single notch and hole, or with two or more notches or holes, to permit of the angular adjustment of the blade with reference to the handle.

It is frequently desirable to adjust the saw blade at an angle to the handle to permit the saw to be more conveniently used in sawing a floor in the corner of a room, or sawing in some otherwise inaccessible place, and it is desirable to so adjust the handle with reference to the blade to permit the cutting of a dado across a board and retaining the handle out of contact with the board. There are many other instances in which it is desirable to adjust the blade at different angles with reference to the handle, and my improvement permits of the expeditious adjustment of the blade at different angles with respect to the handle and enables the blade to be firmly secured to the handle at any desired angle with relation thereto.

By means of my improved construction the saw blade may be readily adjusted and firmly secured at any desired position with reference to the handle. This is effected by loosening the thumb nut sufficiently to re-` lease the supplemental head P of the two armed bolt from the hole in heel ofthe blade, and then turning the blade to the de-V sired position and reinserting the head PinV the hole at thatpoint on the heel and screw ing down the thumb nutuntil its disk is forced snugly against the -saW blade. Theconstruction of parts is extremely simple' and durable and will enable -any user to quickly insert or detach La saw yblade or adjust i-t to any desired angle.

The construction of the handle maybe Widely varied Without departing 'from the invention. `It may be madeI of cast metal or part'metal and part ofwood, fiber or other material, and -hence I would haveeit understood that I do not restrict the improve ment to the particular vconstruction shown and described.

Hav-ing fully describedk my invention Whaty I claim as new and desire to secureb'y Let-l ters-Patent, is

l. The combination of a savv having notches in the rear edge of its heel portion and also having holes near saidfnotcheaa' handle having a recessed seattoreceivethe heelof the saw, said handle vhaving openings to aline With a notch and -a hole-respec-z tively inthe heel of the saw, and 'a two armed bolt passing through a notch and? hole in the heel of the saivf andthroughfsaid openings in the handle, and securing means 'applied to one arm of said bolt.

2. The combination with a vsaw havingv notches 1n the rear'edge of its vheel portlon, and having holesnear said notches,of a saw having .a recessed seat for the heel of the saw, said handle having an opening to aline with any'of'the notches of the saw heel and also -having an opening to aline With any of the holes of the saw heel, a U-shaped bolt passingthrough t-he openings ofthe handle and a notch and hole in the saw "heel, one arm 'of saidfbolt'having a threaded shank,

Vand a thumb nut on said shank and having ia concave disk portionbearing against "the isavv handle.

Thecombinationof a handlehavingla '4. T he .combination `of yahandle having a ljconcaveY seat 'for'theheelof a saw, 4a saw havm'gthe rear :edge of its heel portion con- Vex, the radius 'of thecurve on `the heel of lthe saw beinggrea'terthan theradius of the curve of said seat, and fastening means carfrfiedbythehandle and engaging 4the heel of thefsawto secure the saw at` diife'rentfangular adjustments lwith respect'to the handle.

In testimony whereof, Ihave signed this specification inathe presence of two subscribv.ing witnesses.

y 'oLrvER o. FRAME. Tit-nesses H. E. LUCAS, Y HAROLD VBLUoAs.

Copies/fthis patent-maybe 'btaindforfve cents each, lay-addressing'the Comniissioner ffiatents, `Washington,DEG. 

